package com.piao.dao;

import com.piao.User;
import org.apache.ibatis.annotations.Param;

import java.util.List;
import java.util.Map;

//操作数据库的接口
public interface User5Mapper {

    //查询所有User
    List<User> selectUser();

    //按照id查询User
    User selectUserById(int id);

}